Question # 1

Proteins loose their ability to work

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by slight heating

by change in structure

by slight cooling

when inside the body

The most complex strueture a single polypetide can assume is

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1° structure

2°structure

3° structure

4° structure

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

Glucose is converted into ethanol by the enzyme present in the yeast

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Urease

Zymase

Invertase

Sucrase

The enzymes that bring about exchange of functional groups like phosphate are called

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Ligases

Lyases

Isomerases

Transferases

Simplest Structure of a protein that has only covalent bonding between amino acids is

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2° structure

3°structure

1° structure

4° structure

The enzyme which is found in saliva, accelerates the conversion of starch into sugar is

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Pepsin

Thrombin

Ptyalin

Fumarase

Lactoglobulin is found in

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nucleus

nerve cells

Plants only

muscles and in plants

Which of the following is not a category of proteins based upon their function?

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genetic

Regulatory

nucleo

structural

Proteins have linkage between amino acids

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imide

amide

ester

ether

Abumins and globulins are defined as

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Derived protein

Conjugated protein

Fibrous protein

Simple Protein

The specifie substance (metabolite) that fits on the enzyme surface and is converted to products is called

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Co-factor

Isoenzyme

Prosthetic group

Substrate

Primar structure of proteins refers to

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Coling and folding in form of specilie structure

3d structure

Number of amino acids in a chain

Alpha and Beta sheets

Prosthetic groups are

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helical structures in protein

sulphur containing parts of protein

non-protein parts in compound proteins

sites for hydrogen bonding

The type of isomerism shown by alkyl halides is

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geometric

functional

positional

metamerism

In proteins, the alpha-helix and Beta-pleated sheet are examples of

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^{Primary Structure}

Secondary Structure

Tertiary Structure

Quaternary Structure

The protein component of enzyme ls called

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apoenzyme

proenzyme

holoenyme

co-enzyme

Enzymes are

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simple proteins

derived proteins

compound proteins

conjugated proteins

The enzymes that catalyse the addition or removal of ammonia are:

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Lyases

Ligases

Transferases

Kinses

Increased concentration of enzyme alkaline phosphatase is a sign of

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hemophilia

heart disease

thrombosis

rickets

Which of the following bond is responsible for joining the amino acids in proteins?

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Metallic Bond

Di sulfide bond

Peptide Bond

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